Miniaturized atomic magnetometers (AMs), particularly spin-exchange relaxation-free (SERF) AMs, have been emerging in clinical imaging applications such as magnetocardiography (MCG) and magnetoencephalography (MEG). Miniaturization, portability, low cost are primary development targets for biomagnetic technologies, well high sensitivity, temporal, spatial resolution. In this article, we propose...

A Widely flatness gainbandwidth with double pass parallel hybrid fiber amplifier is experimentally demonstrated in this study. The proposed design combines serial erbium–Raman one branch and Raman the second branch. Multiple pump units a maximum power of 800 mW (250 1410 nm, 225 1480 325 1495 nm) are utilized. Pump recycling technique applied to achieve acceptable pumping efficiency. gain bandw...

Rice is the staple food of majority Indonesian population. processed from paddy rice through several stages, starting harvesting, threshing, cleaning, drying, stripping husk, polishing, and packaging. Processing mechanically increases production reduces yield losses. Husker one machines used to remove chaff (the outer husks) grains rice. This study aims evaluate performance a double pass husker...